Gas container and method of producing the same
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsTakeshi Ishikawa, Masaaki Amano, Masahiko Ota
Life of this patent
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Abstract
An object is to provide a gas container and a method of producing the gas container in which liner constituting members can appropriately be joined to each other and productivity can be improved. A gas container has a resin liner constituted by joining a plurality of liner constituting members, the liner constituting members each having at least a hollow cylindrical part, and a reinforcement layer arranged on an outer periphery of the resin liner. Joining portions of the liner constituting members are joined to each other over a circumferential direction by laser welding, and the joining portions are made of a laser transmitting resin and a laser absorbing resin, respectively.
Claims32
A method of producing a gas container having a resin liner constituted by joining a plurality of liner constituting members, the liner constituting members each having at least a tubular part, the method comprising:
- providing the plurality of resin liner constituting members,
- the plurality of resin liner constituting members including a first liner constituting member having a first joining portion and a second liner constituting member having a second joining portion, the first joining portion having an inward chamfered first joining end surface, and a first extending portion extending externally from a tip end portion of the first joining end surface, the second joining portion having a second joining end surface externally chamfered along the first joining end surface;
- a first step of constituting the first joining end surface by a laser transmitting member and constituting the second joining end surface by a laser absorbing member;
- a second step of bringing the first joining end surface into contact with the second joining end surface and bringing the first extending portion into contact with an outer peripheral surface of the second joining portion after the first step;
- and
- a third step of irradiating the liner constituting members with laser from a side of the first joining portion to join the first joining end surface and the second joining end surface by laser welding which are brought into contact with each other after the second step;
- and
- a step of shaving the first extending portion so that joints of outer peripheral surfaces of the first and second liner constituting members have the same plane after the third step.
A method of producing the gas container having a resin liner constituted by joining a plurality of liner constituting members, the liner constituting members each having at least a tubular part, the method comprising:
- providing the plurality of resin liner constituting members,
- the plurality of resin liner constituting members including a first liner constituting member having a first joining portion and a second liner constituting member having a second joining portion, the first joining portion having an inward chamfered first joining end surface and a first extending portion extending externally from a tip end portion of the first joining end surface, the second joining portion having a second joining end surface externally chamfered along the first joining end surface and a second extending portion extending from a tip end portion of the second joining end surface;
- a first step of constituting the first joining end surface by a laser transmitting member and constituting the second joining end surface by a laser absorbing member;
- a second step of bringing the first joining end surface into contact with the second joining end surface, bringing the first extending portion into contact with an outer peripheral surface of the second joining portion, and bringing the second extending portion into contact with an inner peripheral surface of the first joining portion after the first step;
- and
- irradiating the liner constituting members from a side of the first joining portion with laser to join the first joining end surface and the second joining end surface by laser welding which are brought into contact with each other after the second step.
Dependencies are inferred from the claim text.